<template>
  <div class="login-container">
    <div class="login-box">
      <!-- 头像区域-->
      <div class="avatar-box">
        <img src="~assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区域-->
      <el-form
        label-width="0px"
        class="login-form"
        :model="loginForm"
        :rules="loginFormRules"
        ref="loginFormRef"
      >
        <!--用户名-->
        <el-form-item prop="username">
          <el-input
            prefix-icon="iconfont icon-denglu-yonghu"
            v-model="loginForm.username"
          ></el-input>
        </el-form-item>
        <!-- 密码-->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-suo"
            v-model="loginForm.password"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="danger" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      //登录表单的数据绑定
      loginForm: {
        username: "admin",
        password: "123456"
      },
      // 表单验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: "请输入登录名称", trigger: "blur" },
          { min: 3, max: 10, message: "长度在 3 到 10 个字符", trigger: "blur" }
        ],
        // 验证密码是否正确
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在 6 到 15 个字符", trigger: "blur" }
        ]
      }
    };
  },
  methods: {
    // 表示重置的按钮
    resetLoginForm() {
      // console.log(this)
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) {
          return;
        }
        const { data: result } = await this.$http.post("login", this.loginForm);
        if (result.meta.status !== 200) {
          this.$message.error("登录失败！");
        } else {
          this.$message.success("登录成功~");
          console.log(result);
          // 1.保存登录成功后的token，用于访问登录之外的其他API接口
          window.sessionStorage.setItem("token", result.data.token);
          // 2.通过编程式导航跳转到后台主页，路由地址是 /home
          this.$router.push("/home");
        }
      });
    }
  }
};
</script>

<style scoped lang="less">
.login-container {
  height: 100vh;
  background-color: #cde6c7;
}
.login-box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 20px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar-box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}
.login-form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.formItem {
  align-content: space-evenly;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
